2,6-Di-tert-butyl-4-(dimethylaminomethyl)phenol

2,6-Di-tert-butyl-4-(dimethylaminomethyl)phenol, CAS 88-27-7, is a hindered phenolic compound with an aminomethyl functional group, commercially known under the trade names Ionox 103 and Ionox(r) 103. It carries EC number 201-816-1 and the molecular formula C17H29NO. No E-code designation applies to this substance.

In polymer and rubber processing, the compound interrupts free-radical chain oxidation by donating hydrogen atoms to peroxy radicals, delaying thermal and oxidative degradation during high-temperature compounding. It is also incorporated into lubricant and metalworking fluid formulations, where the aminomethyl group provides additional metal-passivating activity alongside antioxidant protection.

The material is supplied as a powder to crystalline solid and is subject to REACH registration requirements within the European Economic Area. Procurement teams should confirm supplier SDS documentation and purity specifications prior to ordering. HS code 2922.29.8190 applies for import and export classification purposes.